Cats are generally much more independent than dogs. But they still need company. And even though you are not able to be home all the time, saying hello can make a big difference. If you are able to login with your smartphone and speak to your cat, give them a treat or let them chase the laser, then you will both be lit up. It's not going to be the same as playing with your cat in real life, but it's much better than nothing. And you will have the reassurance that things are OK at home.